package com.zsl.adapter;  
  
import java.util.ArrayList;  
  
import android.support.v4.view.PagerAdapter;  
import android.support.v4.view.ViewPager;  
import android.view.View;  
  
/** 
 * @author yangyu 
 *  功能描述：ViewPager适配器，用来绑定数据和view 
 */  
public class ViewPagerAdapter extends PagerAdapter {  
      
    //界面列表  
    private ArrayList<View> views;  
      
    public ViewPagerAdapter (ArrayList<View> views){  
        this.views = views;  
    }  
         
    /** 
     * 获得当前界面数 
     */  
    @Override  
    public int getCount() {  
         if (views != null) {  
             return views.size();  
         }        
         return 0;  
    }  
  
    /** 
     * 初始化position位置的界面 
     */  
    @Override  
    public Object instantiateItem(View view, int position) {  
         
        ((ViewPager) view).addView(views.get(position), 0);  
         
        return views.get(position);  
    }  
      
    /** 
     * 判断是否由对象生成界面 
     */  
    @Override  
    public boolean isViewFromObject(View view, Object arg1) {  
        return (view == arg1);  
    }  
  
    /** 
     * 销毁position位置的界面 
     */  
    @Override  
    public void destroyItem(View view, int position, Object arg2) {  
        ((ViewPager) view).removeView(views.get(position));         
    }  
} 